class_docstr: Traversable container for a package's resources via its reader.
code: def iterdir(self):
      files = (
          ResourceHandle(self, name) for name in self.reader.resources
      )
      dirs = map(ResourceContainer, self.reader.children())
      return itertools.chain(files, dirs)
  
imports: import abc
  import io
  import itertools
  from typing import BinaryIO, List
  from .abc import Traversable, TraversableResources
label_desc: Use image node_id 4 for calling the ResourceContainer obj's underlying member method code with example usage: obj.iterdir() and returns: itertools